1、Unit 3Fascinating ParksPeriod Learning About LanguageEvery field of nature is wonderful.大自然的每一个领域都是美妙绝伦的。1_ n.禁止；阻止；禁令_ vt.(尤指以法令)禁止；阻止2_ n.新闻记者；新闻工作者3_ vi.打喷嚏 n.喷嚏；喷嚏声4_ n.茶壶5_ vt.用标签标明；贴标签n.标签；标记6_ n.奶油；乳脂；护肤霜adj.奶油色的；淡黄色的prohibitjournalistprohibitionsneezeteapotlabelcream 7leopard n._ 8_ vi.延伸；延续
2、 vi.&vt.伸展；舒展 9_ adj.值得做的；有益的10_ n.灌木11_ n.肺豹stretchrewardingbushlung(1)Motor vehicles _ in the town centre at this time every day.每天这时候机动车辆禁止在市中心行驶。(2)Speaking loudly in the reading room _在阅览室内禁止大声喧哗。(3)The police prohibit_(park)in the city centre.警方禁止在市中心停车。are prohibited from drivingis prohibited
3、parking(1)You should stretch at least ten minutes before each run to prevent injuries.你应该在每次跑步前至少做10分钟的伸展运动，以防受伤。(2)He wondered about it as he_and let it expose to the sun.当他舒展身体晒太阳的时候，他在想着这件事。(3)She _ to provide for the family.她竭尽全力养活一家人。stretched his bodystretched herself(4)My brother_and embraced
4、 me tightly.我哥哥伸出他的双臂，紧紧地拥抱了我。stretched out his arms最近发现的行星几乎是地球的三倍大，人类有望能在上面生活。(1)The planet discovered recently is almost _the Earth,and hopefully it can support human life.(as)(2)The planet discovered recently is almost _the Earth,and hopefully it can support human life.(than)(3)The planet discov
5、ered recently is almostthree times as large asthree times larger than _the Earth,and hopefully it can support human life.(size)Discover useful structures动词ing形式作主语three times the size of探究点1 动名词的基本构成动词ing形式的基本构成为“动词原形ing”，具有时态和语态上的变化。动名词是一种特殊的名词，由动词变化而来。它一方面保留着动词的某些特征，具有动词的某些变化形式，用以表达名词所不能表达的较为复杂的意念
6、；另一方面动名词在句中与普通名词一样，可以充当主语、宾语、表语、定语等成分。动名词还保留了原动词的各种用法，可自带宾语、表语、状语等。动名词连同其后的宾语、表语或状语一起就构成了动名词短语。动名词短语同动名词一样具有名词的特征，可在句中充当主语、宾语、表语、定语等成分。探究点 2 动名词的基本用法1动名词作主语时，多表示经常性、习惯性的动作，通常置于句首。单个动名词(短语)作主语时，谓语动词用单数。Obeying the rules of the school is very important to all of us.遵守学校的规定对我们大家都很重要。Saying is one thing
7、,and doing is another.说是一回事，而做是另一回事。Having a walk(every day)helps to make one keep healthy.每天散步有助于一个人保持健康。Climbing mountains is really difficult for the old.对于老人来说爬山确实困难。2动词ing形式作主语表示事物化、抽象化的概念。Travelling(a lot)is a good way to help people become knowledgeable.经常旅行是帮助人们变得学识渊博的好方法。3当句型“There is no.”表
8、示“不允许、禁止某种行为的发生或存在”时，需用动名词作主语。There is no joking about such matters.这种事开不得玩笑。探究点3 动名词的复合结构动名词的复合结构指的是“名词所有格或物主代词动名词”的形式。动名词的复合结构在句中可作主语或宾语。My sisters being ill made us worried.我姐姐病了，我们都很担心。Jerrys not arriving on time made the people present angry.杰里未能按时到达令在场的人很生气。Before each class,the sound of the d
9、esks being opened and closed can be heard clearly.每节课前，都能清晰地听到课桌被打开和关上的声音。探究点4it作形式主语的情况it 作形式主语，真正的主语是后面的动名词，主要用于下列句型中：It is no use crying when you have made a mistake.犯了错误哭泣是无用的。It is no good making friends with those addicted to playing video games.和那些沉迷于玩电子游戏的人交朋友没好处。It is a waste of time arguin
10、g with him about the matter.同他争辩这件事真是浪费时间。探究点5 动词ing形式与不定式作主语的区别动词ing形式和不定式都可以作主语。动词ing形式作主语表示比较抽象的一般行为，不定式作主语往往表示具体的或一次性的动作。To look after children is her job today.她今天的工作是看孩子。Looking after children is her work.她的工作是照顾孩子。Singing is my hobby,and to sing at my friends birthday party is my dream.唱歌是我的爱
11、好，在朋友的生日宴会上唱歌是我的梦想。单句语法填空1_(Tom,come)is what we have expected.2_(go)from junior high school to senior high school is a really big challenge.3_(quit)smoking did not affect my intellectual work at all.4_(misunderstand)by others when you do nothing wrong at all is quite a bad experience.Toms comingGoin
12、gQuittingBeing misunderstood5_(take)exercise every morning helps make one healthy.6_(defeat)is often a temporary condition.Giving up is what makes it permanent.7_(expose)to the English broadcast can do a lot of good to your English study.8Do you think my _(go)there will be of any help?9_(appreciate)
13、by others is something that always makes people happy.TakingBeing defeatedBeing exposedgoingBeing appreciated10There is no _(park)between 9a.m.and 6 pm.11It is no use _(cry)over spilt milk.12Its no pleasure _(look)through these any longer because nature is one thing that really must be experienced.parkingcryinglooking
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